Fix build

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/ClutCalculator.cs

@@ -1,104 +1,102 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
-using System;
 using System.Numerics;
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
 
-namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
+namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc;
+
+internal class ClutCalculator : IVector4Calculator
 {
-    internal class ClutCalculator : IVector4Calculator
+    private readonly int inputCount;
+    private readonly int outputCount;
+    private readonly float[][] lut;
+    private readonly byte[] gridPointCount;
+    private readonly int[] indexFactor;
+    private readonly int nodeCount;
+
+    public ClutCalculator(IccClut clut)
     {
-        private int inputCount;
-        private int outputCount;
-        private float[][] lut;
-        private byte[] gridPointCount;
-        private int[] indexFactor;
-        private int nodeCount;
-
-        public ClutCalculator(IccClut clut)
-        {
-            Guard.NotNull(clut, nameof(clut));
-
-            this.inputCount = clut.InputChannelCount;
-            this.outputCount = clut.OutputChannelCount;
-            this.lut = clut.Values;
-            this.gridPointCount = clut.GridPointCount;
-            this.indexFactor = this.CalculateIndexFactor(clut.InputChannelCount, clut.GridPointCount);
-            this.nodeCount = (int)Math.Pow(2, clut.InputChannelCount);
-        }
+        Guard.NotNull(clut, nameof(clut));
+
+        this.inputCount = clut.InputChannelCount;
+        this.outputCount = clut.OutputChannelCount;
+        this.lut = clut.Values;
+        this.gridPointCount = clut.GridPointCount;
+        this.indexFactor = CalculateIndexFactor(clut.InputChannelCount, clut.GridPointCount);
+        this.nodeCount = (int)Math.Pow(2, clut.InputChannelCount);
+    }
 
-        public unsafe Vector4 Calculate(Vector4 value)
-        {
-            value = Vector4.Clamp(value, Vector4.Zero, Vector4.One);
+    public unsafe Vector4 Calculate(Vector4 value)
+    {
+        value = Vector4.Clamp(value, Vector4.Zero, Vector4.One);
 
-            Vector4 result = default;
-            this.Interpolate((float*)&value, this.inputCount, (float*)&result, this.outputCount);
+        Vector4 result = default;
+        this.Interpolate((float*)&value, this.inputCount, (float*)&result, this.outputCount);
 
-            return result;
+        return result;
+    }
+
+    private static int[] CalculateIndexFactor(int inputCount, byte[] gridPointCount)
+    {
+        int[] factors = new int[inputCount];
+        int gpc = 1;
+        for (int j = inputCount - 1; j >= 0; j--)
+        {
+            factors[j] = gpc * (gridPointCount[j] - 1);
+            gpc *= gridPointCount[j];
         }
 
-        private int[] CalculateIndexFactor(int inputCount, byte[] gridPointCount)
+        return factors;
+    }
+
+    private unsafe void Interpolate(float* values, int valueLength, float* result, int resultLength)
+    {
+        float[][] nodes = new float[this.nodeCount][];
+        for (int i = 0; i < nodes.Length; i++)
         {
-            int[] factors = new int[inputCount];
-            int gpc = 1;
-            for (int j = inputCount - 1; j >= 0; j--)
+            int index = 0;
+            for (int j = 0; j < valueLength; j++)
             {
-                factors[j] = gpc * (gridPointCount[j] - 1);
-                gpc *= gridPointCount[j];
+                float fraction = 1f / (this.gridPointCount[j] - 1);
+                int position = (int)(values[j] / fraction) + ((i >> j) & 1);
+                index += (int)((this.indexFactor[j] * (position * fraction)) + 0.5f);
             }
 
-            return factors;
+            nodes[i] = this.lut[index];
         }
 
-        private unsafe void Interpolate(float* values, int valueLength, float* result, int resultLength)
+        Span<float> factors = stackalloc float[this.nodeCount];
+        for (int i = 0; i < factors.Length; i++)
         {
-            float[][] nodes = new float[this.nodeCount][];
-            for (int i = 0; i < nodes.Length; i++)
+            float factor = 1;
+            for (int j = 0; j < valueLength; j++)
             {
-                int index = 0;
-                for (int j = 0; j < valueLength; j++)
-                {
-                    float fraction = 1f / (this.gridPointCount[j] - 1);
-                    int position = (int)(values[j] / fraction) + ((i >> j) & 1);
-                    index += (int)((this.indexFactor[j] * (position * fraction)) + 0.5f);
-                }
+                float fraction = 1f / (this.gridPointCount[j] - 1);
+                int position = (int)(values[j] / fraction);
 
-                nodes[i] = this.lut[index];
-            }
+                float low = position * fraction;
+                float high = (position + 1) * fraction;
+                float percentage = (high - values[j]) / (high - low);
 
-            Span<float> factors = stackalloc float[this.nodeCount];
-            for (int i = 0; i < factors.Length; i++)
-            {
-                float factor = 1;
-                for (int j = 0; j < valueLength; j++)
+                if (((i >> j) & 1) == 1)
                 {
-                    float fraction = 1f / (this.gridPointCount[j] - 1);
-                    int position = (int)(values[j] / fraction);
-
-                    float low = position * fraction;
-                    float high = (position + 1) * fraction;
-                    float percentage = (high - values[j]) / (high - low);
-
-                    if (((i >> j) & 1) == 1)
-                    {
-                        factor *= percentage;
-                    }
-                    else
-                    {
-                        factor *= 1 - percentage;
-                    }
+                    factor *= percentage;
+                }
+                else
+                {
+                    factor *= 1 - percentage;
                 }
-
-                factors[i] = factor;
             }
 
-            for (int i = 0; i < resultLength; i++)
+            factors[i] = factor;
+        }
+
+        for (int i = 0; i < resultLength; i++)
+        {
+            for (int j = 0; j < nodes.Length; j++)
             {
-                for (int j = 0; j < nodes.Length; j++)
-                {
-                    result[i] += nodes[j][i] * factors[j];
-                }
+                result[i] += nodes[j][i] * factors[j];
             }
         }
     }

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/ColorTrcCalculator.cs

@@ -1,54 +1,53 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System.Numerics;
 using System.Runtime.CompilerServices;
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
 
-namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
+namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc;
+
+internal class ColorTrcCalculator : IVector4Calculator
 {
-    internal class ColorTrcCalculator : IVector4Calculator
-    {
-        private TrcCalculator curveCalculator;
-        private Matrix4x4 matrix;
-        private bool toPcs;
+    private TrcCalculator curveCalculator;
+    private Matrix4x4 matrix;
+    private bool toPcs;
 
-        public ColorTrcCalculator(
-            IccXyzTagDataEntry redMatrixColumn,
-            IccXyzTagDataEntry greenMatrixColumn,
-            IccXyzTagDataEntry blueMatrixColumn,
-            IccTagDataEntry redTrc,
-            IccTagDataEntry greenTrc,
-            IccTagDataEntry blueTrc,
-            bool toPcs)
-        {
-            this.toPcs = toPcs;
-            this.curveCalculator = new TrcCalculator(new IccTagDataEntry[] { redTrc, greenTrc, blueTrc }, !toPcs);
+    public ColorTrcCalculator(
+        IccXyzTagDataEntry redMatrixColumn,
+        IccXyzTagDataEntry greenMatrixColumn,
+        IccXyzTagDataEntry blueMatrixColumn,
+        IccTagDataEntry redTrc,
+        IccTagDataEntry greenTrc,
+        IccTagDataEntry blueTrc,
+        bool toPcs)
+    {
+        this.toPcs = toPcs;
+        this.curveCalculator = new TrcCalculator(new IccTagDataEntry[] { redTrc, greenTrc, blueTrc }, !toPcs);
 
-            Vector3 mr = redMatrixColumn.Data[0];
-            Vector3 mg = greenMatrixColumn.Data[0];
-            Vector3 mb = blueMatrixColumn.Data[0];
-            this.matrix = new Matrix4x4(mr.X, mr.Y, mr.Z, 0, mg.X, mg.Y, mg.Z, 0, mb.X, mb.Y, mb.Z, 0, 0, 0, 0, 1);
+        Vector3 mr = redMatrixColumn.Data[0];
+        Vector3 mg = greenMatrixColumn.Data[0];
+        Vector3 mb = blueMatrixColumn.Data[0];
+        this.matrix = new Matrix4x4(mr.X, mr.Y, mr.Z, 0, mg.X, mg.Y, mg.Z, 0, mb.X, mb.Y, mb.Z, 0, 0, 0, 0, 1);
 
-            if (!toPcs)
-            {
-                Matrix4x4.Invert(this.matrix, out this.matrix);
-            }
+        if (!toPcs)
+        {
+            Matrix4x4.Invert(this.matrix, out this.matrix);
         }
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public Vector4 Calculate(Vector4 value)
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public Vector4 Calculate(Vector4 value)
+    {
+        if (this.toPcs)
+        {
+            value = this.curveCalculator.Calculate(value);
+            return Vector4.Transform(value, this.matrix);
+        }
+        else
         {
-            if (this.toPcs)
-            {
-                value = this.curveCalculator.Calculate(value);
-                return Vector4.Transform(value, this.matrix);
-            }
-            else
-            {
-                value = Vector4.Transform(value, this.matrix);
-                return this.curveCalculator.Calculate(value);
-            }
+            value = Vector4.Transform(value, this.matrix);
+            return this.curveCalculator.Calculate(value);
         }
     }
 }

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/CurveCalculator.CalculationType.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
 {

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/CurveCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System;
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/GrayTrcCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System.Numerics;
 using System.Runtime.CompilerServices;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/ISingleCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
 {

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/IVector4Calculator.cs

@@ -1,5 +1,5 @@
-// Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Copyright (c) Six Labors.
+// Licensed under the Six Labors Split License.
 
 using System.Numerics;
 

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/LutABCalculator.CalculationType.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
 {

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/LutABCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System;
 using System.Numerics;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/LutCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System;
 using System.Runtime.CompilerServices;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/LutEntryCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System.Numerics;
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
@@ -53,17 +53,17 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
 
         private void Init(IccLut[] inputCurve, IccLut[] outputCurve, IccClut clut, Matrix4x4 matrix)
         {
-            this.inputCurve = this.InitLut(inputCurve);
-            this.outputCurve = this.InitLut(outputCurve);
+            this.inputCurve = InitLut(inputCurve);
+            this.outputCurve = InitLut(outputCurve);
             this.clutCalculator = new ClutCalculator(clut);
             this.matrix = matrix;
 
             this.doTransform = !matrix.IsIdentity && inputCurve.Length == 3;
         }
 
-        private LutCalculator[] InitLut(IccLut[] curves)
+        private static LutCalculator[] InitLut(IccLut[] curves)
         {
-            var calculators = new LutCalculator[curves.Length];
+            LutCalculator[] calculators = new LutCalculator[curves.Length];
             for (int i = 0; i < curves.Length; i++)
             {
                 calculators[i] = new LutCalculator(curves[i].Values, false);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/MatrixCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System.Numerics;
 using System.Runtime.CompilerServices;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/ParametricCurveCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System;
 using System.Runtime.CompilerServices;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/Calculators/TrcCalculator.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System.Numerics;
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/IccConverterBase.Checks.cs

@@ -1,173 +1,165 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
-using System.Linq;
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
 
-namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
+namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc;
+
+/// <summary>
+/// Color converter for ICC profiles
+/// </summary>
+internal abstract partial class IccConverterBase
 {
-    /// <summary>
-    /// Color converter for ICC profiles
-    /// </summary>
-    internal abstract partial class IccConverterBase
+    private static ConversionMethod GetConversionMethod(IccProfile profile, IccRenderingIntent renderingIntent)
     {
-        private ConversionMethod GetConversionMethod(IccProfile profile, IccRenderingIntent renderingIntent)
+        switch (profile.Header.Class)
         {
-            switch (profile.Header.Class)
-            {
-                case IccProfileClass.InputDevice:
-                case IccProfileClass.DisplayDevice:
-                case IccProfileClass.OutputDevice:
-                case IccProfileClass.ColorSpace:
-                    return this.CheckMethod1(profile, renderingIntent);
+            case IccProfileClass.InputDevice:
+            case IccProfileClass.DisplayDevice:
+            case IccProfileClass.OutputDevice:
+            case IccProfileClass.ColorSpace:
+                return CheckMethod1(profile, renderingIntent);
+
+            case IccProfileClass.DeviceLink:
+            case IccProfileClass.Abstract:
+                return CheckMethod2(profile);
+
+            default:
+                return ConversionMethod.Invalid;
+        }
+    }
 
-                case IccProfileClass.DeviceLink:
-                case IccProfileClass.Abstract:
-                    return this.CheckMethod2(profile);
+    private static ConversionMethod CheckMethod1(IccProfile profile, IccRenderingIntent renderingIntent)
+    {
+        ConversionMethod method = ConversionMethod.Invalid;
 
-                default:
-                    return ConversionMethod.Invalid;
-            }
+        method = CheckMethodD(profile, renderingIntent);
+        if (method != ConversionMethod.Invalid)
+        {
+            return method;
         }
 
-        private ConversionMethod CheckMethod1(IccProfile profile, IccRenderingIntent renderingIntent)
+        method = CheckMethodA(profile, renderingIntent);
+        if (method != ConversionMethod.Invalid)
         {
-            ConversionMethod method = ConversionMethod.Invalid;
-
-            method = this.CheckMethodD(profile, renderingIntent);
-            if (method != ConversionMethod.Invalid)
-            {
-                return method;
-            }
-
-            method = this.CheckMethodA(profile, renderingIntent);
-            if (method != ConversionMethod.Invalid)
-            {
-                return method;
-            }
-
-            method = this.CheckMethodA0(profile);
-            if (method != ConversionMethod.Invalid)
-            {
-                return method;
-            }
-
-            method = this.CheckMethodTrc(profile);
-            if (method != ConversionMethod.Invalid)
-            {
-                return method;
-            }
-
-            return ConversionMethod.Invalid;
+            return method;
         }
 
-        private ConversionMethod CheckMethodD(IccProfile profile, IccRenderingIntent renderingIntent)
+        method = CheckMethodA0(profile);
+        if (method != ConversionMethod.Invalid)
         {
-            if ((this.HasTag(profile, IccProfileTag.DToB0) || this.HasTag(profile, IccProfileTag.BToD0))
-                && renderingIntent == IccRenderingIntent.Perceptual)
-            {
-                return ConversionMethod.D0;
-            }
+            return method;
+        }
 
-            if ((this.HasTag(profile, IccProfileTag.DToB1) || this.HasTag(profile, IccProfileTag.BToD1))
-                && renderingIntent == IccRenderingIntent.MediaRelativeColorimetric)
-            {
-                return ConversionMethod.D1;
-            }
+        method = CheckMethodTrc(profile);
+        if (method != ConversionMethod.Invalid)
+        {
+            return method;
+        }
 
-            if ((this.HasTag(profile, IccProfileTag.DToB2) || this.HasTag(profile, IccProfileTag.BToD2))
-                && renderingIntent == IccRenderingIntent.Saturation)
-            {
-                return ConversionMethod.D2;
-            }
+        return ConversionMethod.Invalid;
+    }
 
-            if ((this.HasTag(profile, IccProfileTag.DToB3) || this.HasTag(profile, IccProfileTag.BToD3))
-                && renderingIntent == IccRenderingIntent.AbsoluteColorimetric)
-            {
-                return ConversionMethod.D3;
-            }
+    private static ConversionMethod CheckMethodD(IccProfile profile, IccRenderingIntent renderingIntent)
+    {
+        if ((HasTag(profile, IccProfileTag.DToB0) || HasTag(profile, IccProfileTag.BToD0))
+            && renderingIntent == IccRenderingIntent.Perceptual)
+        {
+            return ConversionMethod.D0;
+        }
 
-            return ConversionMethod.Invalid;
+        if ((HasTag(profile, IccProfileTag.DToB1) || HasTag(profile, IccProfileTag.BToD1))
+            && renderingIntent == IccRenderingIntent.MediaRelativeColorimetric)
+        {
+            return ConversionMethod.D1;
         }
 
-        private ConversionMethod CheckMethodA(IccProfile profile, IccRenderingIntent renderingIntent)
+        if ((HasTag(profile, IccProfileTag.DToB2) || HasTag(profile, IccProfileTag.BToD2))
+            && renderingIntent == IccRenderingIntent.Saturation)
         {
-            if ((this.HasTag(profile, IccProfileTag.AToB0) || this.HasTag(profile, IccProfileTag.BToA0))
-                && renderingIntent == IccRenderingIntent.Perceptual)
-            {
-                return ConversionMethod.A0;
-            }
+            return ConversionMethod.D2;
+        }
 
-            if ((this.HasTag(profile, IccProfileTag.AToB1) || this.HasTag(profile, IccProfileTag.BToA1))
-                && renderingIntent == IccRenderingIntent.MediaRelativeColorimetric)
-            {
-                return ConversionMethod.A1;
-            }
+        if ((HasTag(profile, IccProfileTag.DToB3) || HasTag(profile, IccProfileTag.BToD3))
+            && renderingIntent == IccRenderingIntent.AbsoluteColorimetric)
+        {
+            return ConversionMethod.D3;
+        }
 
-            if ((this.HasTag(profile, IccProfileTag.AToB2) || this.HasTag(profile, IccProfileTag.BToA2))
-                && renderingIntent == IccRenderingIntent.Saturation)
-            {
-                return ConversionMethod.A2;
-            }
+        return ConversionMethod.Invalid;
+    }
 
-            return ConversionMethod.Invalid;
+    private static ConversionMethod CheckMethodA(IccProfile profile, IccRenderingIntent renderingIntent)
+    {
+        if ((HasTag(profile, IccProfileTag.AToB0) || HasTag(profile, IccProfileTag.BToA0))
+            && renderingIntent == IccRenderingIntent.Perceptual)
+        {
+            return ConversionMethod.A0;
         }
 
-        private ConversionMethod CheckMethodA0(IccProfile profile)
+        if ((HasTag(profile, IccProfileTag.AToB1) || HasTag(profile, IccProfileTag.BToA1))
+            && renderingIntent == IccRenderingIntent.MediaRelativeColorimetric)
         {
-            bool valid = this.HasTag(profile, IccProfileTag.AToB0) || this.HasTag(profile, IccProfileTag.BToA0);
-            return valid ? ConversionMethod.A0 : ConversionMethod.Invalid;
+            return ConversionMethod.A1;
         }
 
-        private ConversionMethod CheckMethodTrc(IccProfile profile)
+        if ((HasTag(profile, IccProfileTag.AToB2) || HasTag(profile, IccProfileTag.BToA2))
+            && renderingIntent == IccRenderingIntent.Saturation)
         {
-            if (this.HasTag(profile, IccProfileTag.RedMatrixColumn)
-                && this.HasTag(profile, IccProfileTag.GreenMatrixColumn)
-                && this.HasTag(profile, IccProfileTag.BlueMatrixColumn)
-                && this.HasTag(profile, IccProfileTag.RedTrc)
-                && this.HasTag(profile, IccProfileTag.GreenTrc)
-                && this.HasTag(profile, IccProfileTag.BlueTrc))
-            {
-                return ConversionMethod.ColorTrc;
-            }
-
-            if (this.HasTag(profile, IccProfileTag.GrayTrc))
-            {
-                return ConversionMethod.GrayTrc;
-            }
-
-            return ConversionMethod.Invalid;
+            return ConversionMethod.A2;
         }
 
-        private ConversionMethod CheckMethod2(IccProfile profile)
-        {
-            if (this.HasTag(profile, IccProfileTag.DToB0) || this.HasTag(profile, IccProfileTag.BToD0))
-            {
-                return ConversionMethod.D0;
-            }
+        return ConversionMethod.Invalid;
+    }
 
-            if (this.HasTag(profile, IccProfileTag.AToB0) || this.HasTag(profile, IccProfileTag.AToB0))
-            {
-                return ConversionMethod.A0;
-            }
+    private static ConversionMethod CheckMethodA0(IccProfile profile)
+    {
+        bool valid = HasTag(profile, IccProfileTag.AToB0) || HasTag(profile, IccProfileTag.BToA0);
+        return valid ? ConversionMethod.A0 : ConversionMethod.Invalid;
+    }
 
-            return ConversionMethod.Invalid;
+    private static ConversionMethod CheckMethodTrc(IccProfile profile)
+    {
+        if (HasTag(profile, IccProfileTag.RedMatrixColumn)
+            && HasTag(profile, IccProfileTag.GreenMatrixColumn)
+            && HasTag(profile, IccProfileTag.BlueMatrixColumn)
+            && HasTag(profile, IccProfileTag.RedTrc)
+            && HasTag(profile, IccProfileTag.GreenTrc)
+            && HasTag(profile, IccProfileTag.BlueTrc))
+        {
+            return ConversionMethod.ColorTrc;
         }
 
-        private bool HasTag(IccProfile profile, IccProfileTag tag)
+        if (HasTag(profile, IccProfileTag.GrayTrc))
         {
-            return profile.Entries.Any(t => t.TagSignature == tag);
+            return ConversionMethod.GrayTrc;
         }
 
-        private IccTagDataEntry GetTag(IccProfile profile, IccProfileTag tag)
+        return ConversionMethod.Invalid;
+    }
+
+    private static ConversionMethod CheckMethod2(IccProfile profile)
+    {
+        if (HasTag(profile, IccProfileTag.DToB0) || HasTag(profile, IccProfileTag.BToD0))
         {
-            return profile.Entries.FirstOrDefault(t => t.TagSignature == tag);
+            return ConversionMethod.D0;
         }
 
-        private T GetTag<T>(IccProfile profile, IccProfileTag tag)
-            where T : IccTagDataEntry
+        if (HasTag(profile, IccProfileTag.AToB0) || HasTag(profile, IccProfileTag.AToB0))
         {
-            return profile.Entries.OfType<T>().FirstOrDefault(t => t.TagSignature == tag);
+            return ConversionMethod.A0;
         }
+
+        return ConversionMethod.Invalid;
     }
+
+    private static bool HasTag(IccProfile profile, IccProfileTag tag)
+        => profile.Entries.Any(t => t.TagSignature == tag);
+
+    private static IccTagDataEntry GetTag(IccProfile profile, IccProfileTag tag)
+        => profile.Entries.FirstOrDefault(t => t.TagSignature == tag);
+
+    private static T GetTag<T>(IccProfile profile, IccProfileTag tag)
+        where T : IccTagDataEntry
+        => profile.Entries.OfType<T>().FirstOrDefault(t => t.TagSignature == tag);
 }

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/IccConverterBase.ConversionMethod.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
 {

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/IccConverterbase.Conversions.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Icc;
@@ -22,57 +22,57 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
         /// <param name="renderingIntent">The wanted rendering intent. Can be ignored if not available</param>
         protected void Init(IccProfile profile, bool toPcs, IccRenderingIntent renderingIntent)
         {
-            ConversionMethod method = this.GetConversionMethod(profile, renderingIntent);
+            ConversionMethod method = GetConversionMethod(profile, renderingIntent);
             switch (method)
             {
                 case ConversionMethod.D0:
                     this.calculator = toPcs ?
-                        this.InitD(profile, IccProfileTag.DToB0) :
-                        this.InitD(profile, IccProfileTag.BToD0);
+                        InitD(profile, IccProfileTag.DToB0) :
+                        InitD(profile, IccProfileTag.BToD0);
                     break;
 
                 case ConversionMethod.D1:
                     this.calculator = toPcs ?
-                        this.InitD(profile, IccProfileTag.DToB1) :
-                        this.InitD(profile, IccProfileTag.BToD1);
+                        InitD(profile, IccProfileTag.DToB1) :
+                        InitD(profile, IccProfileTag.BToD1);
                     break;
 
                 case ConversionMethod.D2:
                     this.calculator = toPcs ?
-                        this.InitD(profile, IccProfileTag.DToB2) :
-                        this.InitD(profile, IccProfileTag.BToD2);
+                        InitD(profile, IccProfileTag.DToB2) :
+                        InitD(profile, IccProfileTag.BToD2);
                     break;
 
                 case ConversionMethod.D3:
                     this.calculator = toPcs ?
-                        this.InitD(profile, IccProfileTag.DToB3) :
-                        this.InitD(profile, IccProfileTag.BToD3);
+                        InitD(profile, IccProfileTag.DToB3) :
+                        InitD(profile, IccProfileTag.BToD3);
                     break;
 
                 case ConversionMethod.A0:
                     this.calculator = toPcs ?
-                        this.InitA(profile, IccProfileTag.AToB0) :
-                        this.InitA(profile, IccProfileTag.BToA0);
+                        InitA(profile, IccProfileTag.AToB0) :
+                        InitA(profile, IccProfileTag.BToA0);
                     break;
 
                 case ConversionMethod.A1:
                     this.calculator = toPcs ?
-                        this.InitA(profile, IccProfileTag.AToB1) :
-                        this.InitA(profile, IccProfileTag.BToA1);
+                        InitA(profile, IccProfileTag.AToB1) :
+                        InitA(profile, IccProfileTag.BToA1);
                     break;
 
                 case ConversionMethod.A2:
                     this.calculator = toPcs ?
-                        this.InitA(profile, IccProfileTag.AToB2) :
-                        this.InitA(profile, IccProfileTag.BToA2);
+                        InitA(profile, IccProfileTag.AToB2) :
+                        InitA(profile, IccProfileTag.BToA2);
                     break;
 
                 case ConversionMethod.ColorTrc:
-                    this.calculator = this.InitColorTrc(profile, toPcs);
+                    this.calculator = InitColorTrc(profile, toPcs);
                     break;
 
                 case ConversionMethod.GrayTrc:
-                    this.calculator = this.InitGrayTrc(profile, toPcs);
+                    this.calculator = InitGrayTrc(profile, toPcs);
                     break;
 
                 case ConversionMethod.Invalid:
@@ -81,9 +81,9 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
             }
         }
 
-        private IVector4Calculator InitA(IccProfile profile, IccProfileTag tag)
+        private static IVector4Calculator InitA(IccProfile profile, IccProfileTag tag)
         {
-            IccTagDataEntry entry = this.GetTag(profile, tag);
+            IccTagDataEntry entry = GetTag(profile, tag);
             switch (entry)
             {
                 case IccLut8TagDataEntry lut8:
@@ -100,9 +100,9 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
             }
         }
 
-        private IVector4Calculator InitD(IccProfile profile, IccProfileTag tag)
+        private static IVector4Calculator InitD(IccProfile profile, IccProfileTag tag)
         {
-            IccMultiProcessElementsTagDataEntry entry = this.GetTag<IccMultiProcessElementsTagDataEntry>(profile, tag);
+            IccMultiProcessElementsTagDataEntry entry = GetTag<IccMultiProcessElementsTagDataEntry>(profile, tag);
             if (entry == null)
             {
                 throw new InvalidIccProfileException("Entry is null.");
@@ -111,15 +111,15 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
             throw new NotImplementedException("Multi process elements are not supported");
         }
 
-        private IVector4Calculator InitColorTrc(IccProfile profile, bool toPcs)
+        private static IVector4Calculator InitColorTrc(IccProfile profile, bool toPcs)
         {
-            IccXyzTagDataEntry redMatrixColumn = this.GetTag<IccXyzTagDataEntry>(profile, IccProfileTag.RedMatrixColumn);
-            IccXyzTagDataEntry greenMatrixColumn = this.GetTag<IccXyzTagDataEntry>(profile, IccProfileTag.GreenMatrixColumn);
-            IccXyzTagDataEntry blueMatrixColumn = this.GetTag<IccXyzTagDataEntry>(profile, IccProfileTag.BlueMatrixColumn);
+            IccXyzTagDataEntry redMatrixColumn = GetTag<IccXyzTagDataEntry>(profile, IccProfileTag.RedMatrixColumn);
+            IccXyzTagDataEntry greenMatrixColumn = GetTag<IccXyzTagDataEntry>(profile, IccProfileTag.GreenMatrixColumn);
+            IccXyzTagDataEntry blueMatrixColumn = GetTag<IccXyzTagDataEntry>(profile, IccProfileTag.BlueMatrixColumn);
 
-            IccTagDataEntry redTrc = this.GetTag(profile, IccProfileTag.RedTrc);
-            IccTagDataEntry greenTrc = this.GetTag(profile, IccProfileTag.GreenTrc);
-            IccTagDataEntry blueTrc = this.GetTag(profile, IccProfileTag.BlueTrc);
+            IccTagDataEntry redTrc = GetTag(profile, IccProfileTag.RedTrc);
+            IccTagDataEntry greenTrc = GetTag(profile, IccProfileTag.GreenTrc);
+            IccTagDataEntry blueTrc = GetTag(profile, IccProfileTag.BlueTrc);
 
             if (redMatrixColumn == null ||
                 greenMatrixColumn == null ||
@@ -141,9 +141,9 @@ namespace SixLabors.ImageSharp.ColorSpaces.Conversion.Icc
                 toPcs);
         }
 
-        private IVector4Calculator InitGrayTrc(IccProfile profile, bool toPcs)
+        private static IVector4Calculator InitGrayTrc(IccProfile profile, bool toPcs)
         {
-            IccTagDataEntry entry = this.GetTag(profile, IccProfileTag.GrayTrc);
+            IccTagDataEntry entry = GetTag(profile, IccProfileTag.GrayTrc);
             return new GrayTrcCalculator(entry, toPcs);
         }
     }

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/IccConverterbase.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System.Numerics;
 using System.Runtime.CompilerServices;

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/IccDataToDataConverter.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
 

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/IccDataToPcsConverter.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
 

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/IccPcsToDataConverter.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
 

src/ImageSharp/ColorSpaces/Conversion/Implementation/Icc/IccPcsToPcsConverter.cs

@@ -1,5 +1,5 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
 

tests/ImageSharp.Tests/Colorspaces/Icc/Calculators/ClutCalculatorTests.cs

@@ -1,29 +1,27 @@
 // Copyright (c) Six Labors.
-// Licensed under the Apache License, Version 2.0.
+// Licensed under the Six Labors Split License.
 
 using System.Numerics;
 using SixLabors.ImageSharp.ColorSpaces.Conversion.Icc;
 using SixLabors.ImageSharp.Metadata.Profiles.Icc;
 using SixLabors.ImageSharp.Tests.TestDataIcc.Conversion;
-using Xunit;
 
-namespace SixLabors.ImageSharp.Tests.Colorspaces.Icc.Calculators
+namespace SixLabors.ImageSharp.Tests.Colorspaces.Icc.Calculators;
+
+/// <summary>
+/// Tests ICC <see cref="ClutCalculator"/>
+/// </summary>
+[Trait("Color", "Conversion")]
+public class ClutCalculatorTests
 {
-    /// <summary>
-    /// Tests ICC <see cref="ClutCalculator"/>
-    /// </summary>
-    [Trait("Color", "Conversion")]
-    public class ClutCalculatorTests
+    [Theory]
+    [MemberData(nameof(IccConversionDataClut.ClutConversionTestData), MemberType = typeof(IccConversionDataClut))]
+    internal void ClutCalculator_WithClut_ReturnsResult(IccClut lut, Vector4 input, Vector4 expected)
     {
-        [Theory]
-        [MemberData(nameof(IccConversionDataClut.ClutConversionTestData), MemberType = typeof(IccConversionDataClut))]
-        internal void ClutCalculator_WithClut_ReturnsResult(IccClut lut, Vector4 input, Vector4 expected)
-        {
-            var calculator = new ClutCalculator(lut);
+        ClutCalculator calculator = new(lut);
 
-            Vector4 result = calculator.Calculate(input);
+        Vector4 result = calculator.Calculate(input);
 
-            VectorAssert.Equal(expected, result, 4);
-        }
+        VectorAssert.Equal(expected, result, 4);
     }
 }